Results 31 to 40 of about 1,282,776 (86)
河南某煤化工企业采用分质预处理和多种工艺组合方式深度处理煤化工废水,即采用水解酸化+UASB预处理乙二醇废水,两级破氰技术预处理煤气化废水,经预处理的废水与其他生产废水、生活污水混合后采用A/O生化处理;对生化出水、循环排污水和除盐排污水的混合水采用臭氧氧化+曝气生物滤池(BAF)组合工艺深度处理。结果表明,最终出水水质满足《污水综合排放标准》(GB 8978-1996)的一级标准和《城镇污水处理厂污染物排放标准》(GB 18918-2002)的一级A标准。
王文豪, 高健磊, 高镜清
doaj +2 more sources
Tri‐stereoscopic PeruSat‐1 imagery enables the simultaneous generation of 0.70 m‐resolution topography and spatially distributed Manning roughness maps, achieving 0.434 m vertical accuracy. Integrated into HEC‐RAS, these products provide consistent, high‐resolution inputs that improve hydraulic modelling and flood risk assessment in data‐scarce river ...
Jorge L. Miranda‐Pita +3 more
wiley +1 more source
进行了不加菌剂预处理秸秆(A组)、用复合菌剂B1预处理秸秆(B1组)、用复合菌剂B2预处理秸秆(B2组)、不加菌剂预处理秸秆与猪粪混合(C组)4种不同处理方式的秸秆产沼气对比试验,结果表明:用菌剂预处理过的秸秆试验组(B1组和B2组)和秸秆与猪粪混合发酵组(C组)的平均产气量均高于不加菌剂预处理的纯秸秆对照组(A组),分别提高了33.65%,38.32%,39.31%;用复合菌剂预处理过的秸秆产沼气启动时间比不加菌剂预处理的纯秸秆快4天 ...
袁月祥 +7 more
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ABSTRACT Cash transfers have become an increasingly important social protection tool in development and humanitarian contexts. In developing countries, cash transfers can be used to build economic resilience. This study examines the effects of unconditional cash transfers on asset accumulation among low‐income households in rural Northern Uganda. Using
Simon Peter Nsereko +2 more
wiley +1 more source
采用O3-H2O2工艺取代Fe/C-H2O2工艺对某农药厂废水进行预处理,对比研究了2种工艺对废水COD的处理效果,以及对后续生化处理的影响。结果表明,相比于Fe/C-H2O2工艺,O3-H2O2预处理对废水COD具有更好的处理效果,经O3-H2O2 和Fe/C-H2O2 预处理后,废水B/C 分别为0.64 和0.48。污泥镜检结果表明,废水经O3-H2O2工艺处理后,后续生化处理好氧池丝状菌生长量降低,从而抑制了污泥膨胀的产生。
吴杨, 李建兴
doaj +2 more sources
ABSTRACT The article examines how ‘soft’ information functions in rational organisations that emphasise hard information, and how this affects safety. Drawing on fieldwork in a high‐security prison, we analyse how frontline personnel interpret soft information about potential disturbances. We identify three coexisting institutional logics shaping these
Grethe Midtlyng +1 more
wiley +1 more source
采用CaSO4和阳离子聚丙烯酰胺(CPAM)对污泥预处理,研究污泥预处理对污泥颗粒化和UASB处理含酚废水的影响。结果表明,污泥预处理加速颗粒污泥的形成,运行90 d,颗粒污泥的质量分数比对照组高40.3%。污泥颗粒化提高了UASB处理含酚废水的运行性能和耐冲击能力。污泥预处理促进了酚类降解菌(Syntrophorhabdus、Cryptanaerobacter、Syntrophus、Pelotomaculum和Pseudomonas)的富集,加速酚类化合物的降解。
陈春茂 +4 more
doaj +2 more sources
Read the free Plain Language Summary for this article on the Journal blog. Abstract Most terrestrial plant species form symbioses with arbuscular mycorrhizal fungi (AMF). However, the below‐ground carbon (C) allocation of plants and the nutritional and growth benefits provided by AMF within this symbiosis vary greatly across species and environments ...
Hengjun Zhao +3 more
wiley +1 more source
Differences in characteristics between naturalized threatened plants and other threatened plants
Abstract Many non‐native plant species introduced by humans have become naturalized. At the same time many species are threatened in their native range. However, the number of plant species threatened in their native range that are naturalized elsewhere remains unknown.
Weihan Zhao +10 more
wiley +1 more source
本发明提供一种基于金刚线切割的硅片的制绒预处理方法,其包括如下步骤:a将氢氟酸溶液、过氧化氢溶液、金属盐和水混合得到预处理液;b将金刚线切割的硅片置于所述预处理液中进行预处理A,直到基本去除硅片上的切割纹;c用酸性溶液对经过预处理A处理的硅片进行清洗,以去除硅片上的金属颗粒;d将用酸性溶液清洗过的硅片置于预处理液中进行预处理B,在所述硅片上形成具均匀微纳结构的预处理绒面 ...
应智琴 +4 more
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